49686650597 has 4 divisors (see below), whose sum is σ = 50244927660. Its totient is φ = 49128373536.

The previous prime is 49686650581. The next prime is 49686650599. The reversal of 49686650597 is 79505668694.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 79505668694 = 2 ⋅39752834347.

It can be written as a sum of positive squares in 2 ways, for example, as 11515650721 + 38170999876 = 107311^2 + 195374^2 .

It is a cyclic number.

It is not a de Polignac number, because 49686650597 - 2⁴ = 49686650581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49686650599) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 279138398 + ... + 279138575.

It is an arithmetic number, because the mean of its divisors is an integer number (12561231915).

Almost surely, 2^49686650597 is an apocalyptic number.

It is an amenable number.

49686650597 is a deficient number, since it is larger than the sum of its proper divisors (558277063).

49686650597 is an equidigital number, since it uses as much as digits as its factorization.

49686650597 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558277062.

The product of its (nonzero) digits is 97977600, while the sum is 65.

The spelling of 49686650597 in words is "forty-nine billion, six hundred eighty-six million, six hundred fifty thousand, five hundred ninety-seven".